The name Eos is a boy's name meaning "dawn; nightingale".

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Although the mythological name Eos originates with a female figure, the Greek Titan of the Dawn, it is occasionally used for males.

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The name Eos is a girl's name of Greek origin meaning "dawn; nightingale".

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Eos -- that's pronounced with a short e like eros without the r -- is the Greek Titan of the dawn.  Any ancient name with a sleek modern feel has definite revival possibilities.  Eos could be an inventive way to honor grandma Dawn. 
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Eos is also a Welsh bird name that is occasionally given to girls in Wales — pleasingly the nightingale, so this name covers both morning and night.

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